Maggiore et al have looked at the use of nasal high-flow oxygen in 100-ish pneumonia/trauma patients and found, most significantly, a reduction in re-intubation rate. You also get more sats for your FiO2, and fewer mask-now-on-their-ear moments. We know it gives flow-related 2-5 cmH2O of CPAP and is preferred by claustrophobes, but this small study suggests …
